CN113599889A - Ultrasonic water purifying device with vibration/noise reduction function - Google Patents
Ultrasonic water purifying device with vibration/noise reduction function Download PDFInfo
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- CN113599889A CN113599889A CN202110447143.7A CN202110447143A CN113599889A CN 113599889 A CN113599889 A CN 113599889A CN 202110447143 A CN202110447143 A CN 202110447143A CN 113599889 A CN113599889 A CN 113599889A
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- shell
- ultrasonic
- vibration
- frequency vibration
- noise reduction
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 230000009467 reduction Effects 0.000 title claims abstract description 17
- 238000003825 pressing Methods 0.000 claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 239000010865 sewage Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 5
- 230000035939 shock Effects 0.000 claims abstract description 5
- 238000010521 absorption reaction Methods 0.000 claims abstract description 4
- 230000009471 action Effects 0.000 claims abstract description 3
- 239000008213 purified water Substances 0.000 claims abstract description 3
- 239000002184 metal Substances 0.000 claims description 21
- 238000000746 purification Methods 0.000 claims description 15
- 229910052755 nonmetal Inorganic materials 0.000 claims description 11
- 238000005485 electric heating Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 claims description 2
- 238000002955 isolation Methods 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000013016 damping Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000005253 cladding Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000009191 jumping Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011033 desalting Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000009210 therapy by ultrasound Methods 0.000 description 1
- 230000005428 wave function Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/70—Regenerating the filter material in the filter by forces created by movement of the filter element
- B01D29/72—Regenerating the filter material in the filter by forces created by movement of the filter element involving vibrations
Abstract
The invention relates to an ultrasonic water purifying device with the functions of shock absorption and noise reduction, which comprises a shell with a water inlet interface, a sewage discharge interface and a purified water outlet interface, a filter element and an ultrasonic high-frequency vibration mechanism, wherein the ultrasonic high-frequency vibration mechanism comprises an ultrasonic high-frequency vibration element, an element shell, an elastic pressing piece and a connecting seat, the connecting seat is arranged on the outer side wall of the shell, one end of the elastic pressing piece is fixedly arranged on the inner bottom surface of the element shell, the ultrasonic high-frequency vibration element is fixedly arranged on the other end of the elastic pressing piece, so that the ultrasonic high-frequency vibration element is arranged in the element shell, the vibration end arranged on the front end of the ultrasonic high-frequency vibration element is exposed out of the element shell, the element shell is assembled with the connecting seat, and under the elastic action of the elastic pressing piece, the vibration end of the ultrasonic high-frequency vibration element is forced to be tightly pressed and attached to the outer surface of the shell; the method is simple, efficient, convenient, safe and firm, and can not cause ultrasonic energy loss and inhibit the generation of resonance noise.
Description
Technical Field
The invention relates to the field of water purifiers, in particular to an ultrasonic water purifier.
Background
The technical scheme of the patent document comprises a shell, a filter element, a metal mesh cylinder and an ultrasonic transducer, wherein the shell is provided with a water inlet, a sewage discharge port and a water purification port, the filter element is a hollow filter element body with a hollow structure, the metal mesh cylinder consists of an inner mesh cylinder and an outer mesh cylinder, the inner mesh cylinder is sleeved in the filter element, the filter element is sleeved in the outer mesh cylinder, the metal mesh cylinder is sleeved in the shell, the ultrasonic transducer is arranged on the shell, a vibrator arranged on the ultrasonic transducer is arranged on the metal mesh cylinder in an overhead manner, and a shock pad is also arranged between the surface of the metal mesh cylinder and the inner wall of the shell; it is through acting on the metal mesh of filter core with the ultrasonic wave on, utilizes the whole surface of the whole filter core of metal mesh to carry out omnidirectional ultrasonic wave high frequency oscillation, makes the whole surface cleanness of filter core clean, is favorable to prolonging the life of filter core, reduces people's daily application cost, guarantees the purification cleanliness factor and the purification quality of water moreover greatly.
Compared with the traditional common water purifier, the technical scheme adds the ultrasonic wave function and prolongs the service life of the filter element, but the structure of the filter element needs to be designed with a special structure so as to connect the vibrator of the built-in ultrasonic transducer with the filter element and further transmit the ultrasonic energy generated by the ultrasonic transducer to the filter element, thereby realizing the purpose of ultrasonic wave cavitation. However, in the water purifier, the filter element is a part which needs to be frequently replaced, the filter element is designed in a complex structure, the generation cost is inevitably increased greatly, the price for selling is naturally expensive, and the general consumer cannot bear the filter element, so that the popularization and the application of the ultrasonic water purifier are greatly influenced. Secondly, the ultrasonic transducer of the technical scheme is not provided with a damping structure for inhibiting the resonance, so that the resonance noise is large in the working process, and the household living environment of people is easily influenced.
Disclosure of Invention
The invention aims to solve the problems and the defects and provides an ultrasonic water purifying device with the functions of shock absorption and noise reduction, the device adopts the ultrasonic high-frequency vibration mechanism composed of the ultrasonic high-frequency vibration element, the element shell, the elastic pressing piece, the connecting seat and the like, so that the ultrasonic high-frequency vibration element is not only simply, efficiently and conveniently arranged on the side wall of the shell, but also is free from welding and bonding, safe, firm and free from falling off, but also the elastic pressing piece is utilized to force the ultrasonic high-frequency vibration element to be tightly contacted with the side wall of the shell, thereby effectively ensuring that the front end of the ultrasonic high-frequency vibration element conducts ultrasonic energy into the shell without causing energy loss, the rear end of the ultrasonic high-frequency vibration element can have a better damping effect, so that the rear end of the ultrasonic high-frequency vibration element cannot transmit resonance backward, and the generation of resonance noise is inhibited.
The technical scheme of the invention is realized as follows: an ultrasonic water purifying device with shock absorption and noise reduction functions comprises a shell with a water inlet interface, a sewage discharge interface and a purified water outlet interface, a filter element arranged in the shell and an ultrasonic high-frequency vibration mechanism; the ultrasonic high-frequency vibration mechanism is characterized by comprising an ultrasonic high-frequency vibration element, an element shell, an elastic pressing piece and a connecting seat, wherein the connecting seat is arranged on the outer side wall of the shell; one end of the elastic pressing piece is fixedly arranged on the inner bottom surface of the element shell, and the ultrasonic high-frequency vibration element is fixedly arranged on the other end of the elastic pressing piece, so that the ultrasonic high-frequency vibration element is arranged in the element shell, and the vibration end arranged on the front end of the ultrasonic high-frequency vibration element is exposed out of the element shell; the element shell is assembled with the connecting seat, and the vibration end of the ultrasonic high-frequency vibration element is forced to be tightly pressed and attached to the outer side surface of the shell under the elastic action of the elastic pressing piece.
Furthermore, the invention also comprises a fixing part, the connecting seat is arranged on the fixing part, and a through hole for the vibration end to pass through is arranged on the corresponding fixing part positioned on the inner side of the connecting seat.
Still further, the component casing includes tube-shape casing, bottom plate, the bottom inboard of tube-shape casing still is equipped with the internal thread, be equipped with the external screw thread that connects with the internal thread mutually soon on the side of bottom plate, the bottom plate connects in tube-shape casing's bottom inboard soon, still is equipped with tool operation hole and line hole on the bottom plate.
The invention further comprises an outer cover shell coated on the shell, wherein the outer cover shell is composed of an upper half cover shell piece and a lower half cover shell piece which are hinged together in a folding way, and sleeving notches are respectively arranged on the upper half cover shell piece and the lower half cover shell piece corresponding to the water interface, the sewage discharge interface and the water outlet and purification interface.
The invention has the beneficial effects that: the invention adopts the ultrasonic high-frequency vibration mechanism composed of the ultrasonic high-frequency vibration element, the element shell, the elastic pressing piece, the connecting seat and the like, so that the ultrasonic high-frequency vibration element is not only simply, efficiently and conveniently arranged on the side wall of the shell, welding and bonding are avoided, the ultrasonic high-frequency vibration element is safe, firm and free from falling off, and is simple and convenient to maintain, but also the elastic pressing piece is utilized to force the ultrasonic high-frequency vibration element to be tightly contacted with the side wall of the shell, the ultrasonic energy can be effectively transmitted from the front end of the ultrasonic high-frequency vibration element to the shell without energy loss, a better damping effect can be achieved for the rear end of the ultrasonic high-frequency vibration element, the rear end of the ultrasonic high-frequency vibration element can not transmit co-vibration backwards, the jumping and the co-vibration are reduced, and the noise generation is well inhibited. Secondly, utilize the all-round ultrasonic wave high frequency oscillation of ultrasonic wave high frequency vibration component to the casing production, make gather dirt, impurity on the filter core, can drop fast, discharge from the drain, be favorable to prolonging the life of filter core, reduce people's daily application cost, guarantee the purification cleanliness factor and the purification quality of water moreover greatly. The technical scheme of the invention has the advantages of simple structure, convenient and quick assembly, no need of welding and bonding, safety, firmness, convenient and simple maintenance, wide application in various water purifier schemes, no need of increasing the structural complexity of the filter element, contribution to reducing the production cost of the filter element, reduction of the replacement cost of the filter element when being used by people, contribution to popularization and application of ultrasonic water purifier products and contribution to mankind. The invention can be used for the occasions of preparing pure water from tap water, purifying sewage, desalting seawater and the like.
Drawings
Fig. 1 is a schematic view of the front side structure of the present invention after the outer cover is opened.
Fig. 2 is a schematic structural view of the present invention taken along its length direction after the outer cover is removed.
FIG. 3 is a schematic view showing an assembly structure of the ultrasonic high-frequency vibration mechanism and the fixing member of the present invention.
Fig. 4 is a cross-sectional structural schematic view of an electric heating element of the present invention.
FIG. 5 is a schematic view of the disassembled structure of the ultrasonic high-frequency vibration mechanism of the present invention.
Detailed Description
As shown in fig. 1 and fig. 2, the ultrasonic water purifying device with vibration and noise reduction functions of the present invention comprises a housing 1 having a water inlet 11, a sewage outlet 12, and a water outlet 13, a filter element 2 installed in the housing 1, and an ultrasonic high-frequency vibration mechanism 3; in order to achieve the object of the present invention, as shown in fig. 3 or fig. 5, the ultrasonic high-frequency vibration mechanism 3 of the present invention includes an ultrasonic high-frequency vibration element 32, an element housing 33, an elastic pressing member 34, and a connecting seat 35; wherein, the connecting seat 35 is installed on the outer side wall of the housing 1; one end of the elastic pressing member 34 is fixedly mounted on the inner bottom surface of the element housing 33, and the ultrasonic high-frequency vibration element 32 is fixedly mounted on the other end of the elastic pressing member 34, so that the ultrasonic high-frequency vibration element 32 is arranged in the element housing 33, and the vibration end 321 arranged on the front end of the ultrasonic high-frequency vibration element is exposed out of the element housing 33; the component housing 33 is assembled with the connecting seat 35, and the vibration end 321 of the ultrasonic high-frequency vibration component 32 is forced to be tightly adhered to the outer side surface of the housing 1 by the elastic force of the elastic pressing member 34, as shown in fig. 2. The elastic pressing member 34 is a spring, a metal elastic piece, a soft rubber body, or a hydraulic cylinder component.
Through the above technical means, the ultrasonic high-frequency vibration element 32 is not only simple, efficient and convenient to install on the side wall of the shell 1, welding and bonding are avoided, safety, firmness and no falling off are realized, maintenance is simple and convenient, and the elastic pressing piece 34 is utilized to force the ultrasonic high-frequency vibration element 32 to be in close contact with the side wall of the shell 1, so that the ultrasonic energy conducted from the front end of the ultrasonic high-frequency vibration element 32 to the inside of the shell 1 can be effectively ensured, energy loss is avoided, a better damping effect can be achieved for the rear end of the ultrasonic high-frequency vibration element 32, the rear end of the ultrasonic high-frequency vibration element 32 cannot transmit and shake backwards, jumping and shake are reduced, noise generation is well inhibited, and further ultrasonic application is realized, and the working and living environment of people cannot be influenced.
In order to improve the production efficiency of the present invention during the assembly process and the quick covering effect of the ultrasonic waves on the housing 1, as shown in fig. 2 and 3, the present invention further includes a fixing member 31, the connecting seat 35 is mounted on the fixing member 31, and a through hole 311 for passing the vibrating end 321 is further provided on the fixing member 31 corresponding to the inner side of the connecting seat 35. As shown in fig. 3, when the ultrasonic high-frequency vibration device is mounted on the housing 1, the ultrasonic high-frequency vibration elements 32 can be mounted on the fixing member 31 one by one, and then fixed on the outer sidewall of the housing 1 through the fixing member 31 at one time, so that the assembly efficiency is greatly improved, and the fixing is convenient and fast.
The fixing member 31 may be a metal ring member or a non-metal ring member, and may be a metal strapping or a non-metal strapping member. As shown in fig. 3, the embodiment uses a metal strapping tape or a non-metal strapping tape component as an example, and the specific configuration is as follows: the fixing component 31 is a metal strapping tape or a non-metal strapping tape, the metal strapping tape or the non-metal strapping tape is further provided with a plurality of through holes 311 along the length direction, and a connecting seat 35 is further installed at a position corresponding to each through hole 311; meanwhile, locking end parts 312 are provided at both ends of the metal binding band or the non-metal binding band, respectively, and a locking bolt member 313 is inserted into the locking end parts 312. In use, the ultrasonic high-frequency vibration elements 32 are attached to the fixing member 31 one by one, and then bound to the outer side wall of the housing 1 with a metal or non-metal binding tape, and locked with the locking bolt member 313.
In the application process, in order to conveniently adjust the elastic pressing force of the elastic pressing member 34 and ensure the close contact between the ultrasonic high-frequency vibration element 32 and the outer side wall of the housing 1, as shown in fig. 4, the element housing 33 includes a cylindrical housing 331 and a bottom plate 332, the inner side of the bottom end of the cylindrical housing 331 is further provided with an internal thread, the side of the bottom plate 332 is provided with an external thread screwed with the internal thread, the bottom plate 332 is screwed in the inner side of the bottom end of the cylindrical housing 331, and the bottom plate 332 is further provided with a tool operation hole 333 and a wire hole 334. In use, the base plate 332 is rotated by inserting an operation tool, such as a screwdriver, into the tool operation hole 333, thereby adjusting the tightness of the elastic pressing member 34 fixed to the base plate 332 against the ultrasonic high-frequency vibration element 32. The elastic pressing member 34 may be a spring or a metal spring; or elastic rubber pads, miniature hydraulic cylinder parts, pneumatic cylinders and other parts with elastic pressing functions. In addition, a clamp stop 335 is formed on the outer surface of the cylindrical housing 331 to facilitate tightening of the cylindrical housing 331 onto the connecting base 35 with a clamp.
In order to obtain a preferable ultrasonic energy efficiency ratio in the present invention, the ultrasonic high-frequency vibration element 32 is an ultrasonic transducer of 1MHz or more or an ultrasonic vibration motor of 1 ten thousand rpm or more.
In order to further improve the shedding ability and the disintegration ability of the invention for the dirt accumulated on the filter element, as shown in fig. 1 and fig. 2, the shell 1 is also provided with an electric heating element 6 which is arranged along the surface of the shell in a wrapping way. The water in the shell 1 is heated by utilizing the electric heating element 6 to heat the shell 1, and then under the ultrasonic treatment of the ultrasonic high-frequency vibration element 32, dirt and impurities accumulated on the filter element can fall off and collapse, so that the dirt and the impurities are discharged from a sewage discharge outlet, and the aim of efficiently cleaning the filter element is fulfilled. The electric heating element 6 is composed of an electric heating film 61 or an electric heating wire 61 and a cladding type shell 62, and locking bolt nuts 60 are further arranged at two ends of the cladding type shell 62 so as to be conveniently fixed on the shell 1 in a cladding mode.
In order to make the product of the present invention have a neat appearance and prevent the electric heating element 6 and the ultrasonic high-frequency vibration element 32 from being exposed to the outside, as shown in fig. 1, the present invention further comprises an outer casing 4 covering the housing 1, wherein the outer casing 4 is composed of an upper half casing 41 and a lower half casing 42 hinged together by two halves, and the positions of the upper half casing 41 and the lower half casing 42 corresponding to the water port 11, the sewage draining port 12 and the water outlet port 13 are respectively provided with a casing notch 43. In order to avoid that liquid enters the outer casing 4 and affects the electricity utilization safety, as shown in fig. 1, a sealing rubber pad 44 is further arranged on the sleeving gap 43; a hinge part 45 is further disposed on one side edge of the upper half casing 41 and the lower half casing 42, a locking part 46 is further disposed on the other side edge of the upper half casing 41 and the lower half casing 42, and screws are threaded through the locking part 46 to lock the upper half casing 41 and the lower half casing 42 together. A sealing rubber gasket 44 is also arranged on the butt joint buckling edge between the upper half casing piece 41 and the lower half casing piece 42 to ensure the sealing performance between the two.
In specific implementation, the invention generally further comprises an electrical box, wherein a circuit control board, an operation key and the like are installed in the electrical box. The electric heating element 6 and the ultrasonic high-frequency vibration element 32 are electrically connected to the circuit control board, respectively. In addition, can also add programmable MCU main control chip on circuit control board to and WIFI module communication module or bluetooth module communication module, compile corresponding APP application program simultaneously and install on smart mobile phone, panel computer etc. can realize wireless communication and control. In addition, the water inlet port 11, the sewage draining port 12 and the water outlet port 13 are also respectively provided with an electromagnetic switch valve 20, and the electromagnetic switch valves 20 are also electrically connected with the circuit control board so as to be selectively switched on or off under the control of the circuit control board, thereby realizing the purpose of automatic control.
Claims (10)
1. An ultrasonic water purifying device with shock absorption and noise reduction functions comprises a shell (1) with a water inlet connector (11), a sewage discharge connector (12) and a purified water outlet connector (13), a filter element (2) arranged in the shell (1) and an ultrasonic high-frequency vibration mechanism (3); the method is characterized in that:
the ultrasonic high-frequency vibration mechanism (3) comprises an ultrasonic high-frequency vibration element (32), an element shell (33), an elastic pressing piece (34) and a connecting seat (35), wherein
The connecting seat (35) is arranged on the outer side wall of the shell (1);
one end of the elastic pressing piece (34) is fixedly arranged on the inner bottom surface of the element shell (33), the ultrasonic high-frequency vibration element (32) is fixedly arranged on the other end of the elastic pressing piece (34), so that the ultrasonic high-frequency vibration element (32) is arranged in the element shell (33) in a shape of a ring, and a vibration end (321) arranged on the front end of the ultrasonic high-frequency vibration element is exposed out of the element shell (33);
the element shell (33) is assembled with the connecting seat (35) and forces the vibration end (321) of the ultrasonic high-frequency vibration element (32) to be tightly pressed and attached to the outer side surface of the shell (1) under the elastic action of the elastic pressing piece (34).
2. The ultrasonic water purification device with the vibration and noise reduction function according to claim 1, wherein: the vibration isolation device is characterized by further comprising a fixing part (31), the connecting seat (35) is installed on the fixing part (31), and a through hole (311) for the vibration end (321) to penetrate through is further formed in the fixing part (31) corresponding to the inner side of the connecting seat (35).
3. The ultrasonic water purification device with the vibration and noise reduction function as claimed in claim 2, wherein: the fixing component (31) is a metal strapping tape or a non-metal strapping tape, the metal strapping tape or the non-metal strapping tape is further provided with a plurality of through holes (311) along the length direction of the metal strapping tape or the non-metal strapping tape, and a connecting seat (35) is further installed at the position corresponding to each through hole (311).
4. The ultrasonic water purification device with the vibration and noise reduction function according to claim 3, wherein: the metal strapping tape or the nonmetal strapping tape is also provided with locking end parts (312) at two ends respectively, and a locking bolt component (313) is arranged on the locking end parts (312) in a penetrating way.
5. The ultrasonic water purification device with the vibration and noise reduction function according to claim 1, wherein: the element shell (33) comprises a cylindrical shell (331) and a bottom plate (332), wherein an internal thread is further arranged on the inner side of the bottom end of the cylindrical shell (331), an external thread screwed with the internal thread is arranged on the side edge of the bottom plate (332), the bottom plate (332) is screwed in the inner side of the bottom end of the cylindrical shell (331), and a tool operation hole (333) and a wire hole (334) are further arranged on the bottom plate (332).
6. The ultrasonic water purification device with the vibration and noise reduction function according to claim 1, wherein: the shell (1) is also provided with an electric heating element (6) which is coated and arranged along the surface of the shell.
7. The ultrasonic water purification device with the vibration and noise reduction function according to claim 1, wherein: the shell is characterized by further comprising an outer shell (4) coated on the shell (1), wherein the outer shell (4) is composed of an upper half shell piece (41) and a lower half shell piece (42) which are hinged together in a butt joint mode, and sleeving notches (43) are further formed in the positions, corresponding to the water interface (11), the sewage discharge interface (12) and the water outlet and purifying interface (13), of the upper half shell piece (41) and the lower half shell piece (42) respectively.
8. The ultrasonic water purification device with the vibration and noise reduction function according to claim 7, wherein: the sleeving gap (43) is also provided with a sealing rubber gasket (44); a hinge part (45) is further arranged on one side edge of the upper half casing part (41) and the lower half casing part (42), and a locking part (46) is further arranged on the other side edge of the upper half casing part (41) and the lower half casing part (42).
9. The ultrasonic water purification device with the vibration and noise reduction function according to claim 1, wherein: the ultrasonic high-frequency vibration element (32) is an ultrasonic transducer of 1MHz or more or an ultrasonic vibration motor of 1 ten thousand rotation speeds or more.
10. The ultrasonic water purification device with the vibration and noise reduction function according to claim 1, wherein: the elastic pressing piece (34) is a spring, a metal elastic piece workpiece, a soft rubber body or a hydraulic cylinder component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110447143.7A CN113599889A (en) | 2021-04-25 | 2021-04-25 | Ultrasonic water purifying device with vibration/noise reduction function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110447143.7A CN113599889A (en) | 2021-04-25 | 2021-04-25 | Ultrasonic water purifying device with vibration/noise reduction function |
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| CN113599889A true CN113599889A (en) | 2021-11-05 |
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|---|---|---|---|
| CN202110447143.7A Pending CN113599889A (en) | 2021-04-25 | 2021-04-25 | Ultrasonic water purifying device with vibration/noise reduction function |
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| CN109351086A (en) * | 2018-11-30 | 2019-02-19 | 厦门三维丝环保股份有限公司 | A kind of large-scale air clearing machine |
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| CN111122709A (en) * | 2019-12-27 | 2020-05-08 | 重庆大学 | Fixing device of acoustic emission probe of rock unipolar experiment |
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